silver steel rod

Silver Steel Cutting Speeds

February 5, 2017 Nigel 0

The recommended cutting speed for silver steel is 15 to 25m/min Using this speed I’ve created the following table of cutting speeds: Diameter of material [mm] Spindle speed [rpm] Roughing Spindle speed [rpm] Finishing 3 [more…]

Brass Gears

Brass Standards

December 28, 2016 Nigel 0

Brass is an alloy of copper and zinc, but often other elements such as aluminium, iron, manganese, tin and lead are added. There are two basic classes of brass: Alpha alloys – less than 37% [more…]

Carbide or Tungsten Carbide

June 25, 2016 Nigel 1

Nowadays tools are often referred to as being made from “carbide” – what they actually mean is Tungsten Carbide. The reason for using Tungsten Carbide is it has some great properties: melting point 2,785–2,830°C hardness of [more…]

Case Hardening Compound

June 7, 2016 Nigel 1

Just bought some case hardening compound from EKP Supplies. I want it for a cylinder that I have machined and would like to try and harden the inner surface. I bought 250g for around £14.00 [more…]